In the world of building backlinks, there are literally a thousand ways you can do it. While some methods may get you banned, there are a lot of methods that can build your brand, traffic and search engine ranking.

Instead of building low-quality links through article directories and low-quality press release services, here are eight solid, untapped sources you may want to consider using:

1. Buy Expired Domains

Buying expired domains is a powerful and seldom-used way to build your link juice. While you don’t want to rely on this method, it doesn’t hurt to add it to your link building arsenal.

Buying expired domains will require you to find a domain that just hit the market, rebuild it like it was before and add any links to the new pages. However, if you go this route, make sure that you carefully look at the domain’s history.

2. Donate to Charity

Donating to a charity is a great way to feel warm and fuzzy inside. Not only that, it’s also a great way to get backlinks and develop a great reputation. To find charities that are willing to link to you in exchange for a donation, you can search for terms like:

– “Donate to us”

– “Sponsors”

– “Contributors”

3. Build a Blog Network

A high-quality blog network is one of the best investments you can possibly make. Using the expired domain strategy mentioned above, you will just want to make sure that you’re using private information, different hosting plans, designs and content management systems. The smaller your blog’s footprint is, the less likely you’ll get caught.

While Fiverr has a bad reputation with some SEO professionals, there are some hidden gems here if you know how to search properly.

The key here is to find a blogger who is willing to give you a contextual link on their website. To find these gems, you can search for the following:

– “Guest post on my”

– “I will post your article”

– “Guest post”

5. HARO

HARO, short for Help a Reporter Out, is one of the best ways to get killer links from reputable organizations like CNN and Bloomberg.

To get a link through this valuable resource, the first thing you’re going to want to do is register on the website. Once you register, you will receive three emails a day from reporters who are looking for sources. If you find a source that you think you can help, respond with your credentials and some helpful tips.

6. Resource Links

Educational websites are notorious for having resource pages with a ton of links. If you have a legitimate website that actually provides value, getting a few links shouldn’t be that hard. To find a .edu resource page, you can search for the following:

– site:.edu “your keyword”

– site:.edu “your keyword” + resources

– site:.edu “your keyword” + websites

7. Guest Posting on Twitter

When it comes to guest posting, so many people will use a guest posting directory or search Google. While this strategy is okay, there’s one untapped resource that no one uses — Twitter.

To find guest posting on this powerful social network, it’s rather simple. What you’re going to want to do is use the real-time search to find opportunities in your niche. For example, searching for “[your keyword] + guest post” could bring up hundreds of opportunities within the last day. When you find one, either reach out to that person on Twitter or directly through their website with your guest posting proposal.

8. Broken Links

No website owner likes to see broken links on their website, and while this technique can take some time, it can pay off big if done properly.

What you’re going to want to do is find resource pages that relate to your niche, similar to the educational resource tip mentioned above. When you find a resource page that relates to your niche, you will want to use this Google Chrome extension to find any broken backlinks on the page.

If there are any broken links, simply send the website owner an email disclosing it, and when you do this, let them know that they should replace the broken resource with yours. Again, as long as your website is reputable enough, you should see desirable results.

These are just a few of the many untapped link building resources out there. Take the time to use these strategies to see how many legitimate links you can build.